... Digital Signals. Direct acting High Pressure Solenoid Valves (EEx d, IP 66) are provided to control the wellhead valve ... system with State of the art fault tolerant, fail safe Programmable Logic Controller, safety I/O modules certified by TUV with Simplex/ ... /PLC Panel Assembly, Testing and Supply of SDP, PLC and HMI systems, Integrated Factory Acceptance Test, SAT, Pre-Commissioning & Commissioning ...